Good!!! Go figure!?!

I've been chasing this rich condition for a while, and I was betting that the MPS was toast.

I measured today with a vacuum pump. Evacuated to 20 Hg - did not drop below 15 Hg within 5 Minutes (tested according to Paul B. Anders D-Jet site specs) only dropped to 18 Hg during that test. Also evacuated to 15 Hg and it held for 5 minutes, only dropping 1 Hg (based on spec found here on this forum).

AA's site says that it should hold 15 Hg indefintely. I have to assume that mine is good from a vacuum standpoint. Can I get a second opinion on that so I can be positive?

I also tested the MPS coils according to Paul B. Anders D-jet site specs. I was nearly right on the money ohm wise.

All said, I have to assume that it is time to move on to the Fuel Pressure - I'll measure that tomorrow. In a strange way, I was kinda hoping it was the MPS. I am soooooo ready to be over this rich mixture issue. Soooooo ready.

Ok... maybe I spoke to soon. I started to look closely at the part number.

My part numbers are as follows:

Bosch: 0 280 100 019
VW: 022 906 051 A

B. Anders site says it should be:

Bosch P/N: 0 280 100 049
VW P/N: 022 906 051 E
(For 1970-1973 1.7L)

Funny thing is, his site makes no mention of either of my part numbers. In addition, I google my part numbers and found absolutely nothing for either (in all combinations of spacing). There was a used MPS for an early (1970-1972) 1.7 that recently sold on eBay - seller listed the "correct" P/Ns: 022 906 051 E and 0 280 100 049 - I guess mine is completely wrong based on my investigations.

Does anybody know what MPS belongs to? I know that they need to match with the ECU, and I am assuming that mine doesn't.

WHAT A BITCH!!! This is getting ridiculous! I'm ready to go off!!!

the pressure sensor should hold yes but the fact that it holds 15 for awhile would not make for a rich rich condition that one could not stand. The fact that it is leaking means definitely that it is on the way out, but I would check first low compression on one cylinder, fuel pressure, and injector spray pattern, and injector color (yellow plug-in ones) Also make sure that someone has not fooled with the sensor causing misadjustment. Many think that by adjusting the sensor they will make it better!!!

pn is correct for the early cars just been superceded to the 049 don't fret.

Thanks George... I was sweating it. It seems to be holding good enough to do it's job in my opinion. The epoxy or screw has not been touched, but I did notice that the unit is held together with screws versus rivets. They look stock - did this vintage have rivets or screws? I wonder if it has been rebuilt at some point. It sure doesn't look like it.

Some had machine screws, some rivets. One of the things we learned at P-car school was to split the ones with screws and put a light coat of grease on the o-ring. It helped the seal. The Cap'n